2001 Chevy Silverado swishing noise under dashboard

Tiny
KEVINLB
  • MEMBER
  • 2001 CHEVROLET SILVERADO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 70,000 MILES
Water noise under dash, heater core not leaking drain is open
Monday, February 16th, 2009 AT 6:38 PM

1 Reply

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Are you low on coolant? Clean and or replace radiator cap. If cap is faulty then you will run without sucking coolant from overflow jug and it will cause air pocket in system and thus causing swishing noise
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Monday, February 16th, 2009 AT 6:55 PM

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